Spring-seat construction



L. A. YOUNG SPRING SEAT CONSTRUCTION Apr. 17, 1923.

Filed June 21, 1921 Leonard fl. Younq I INVENTOR.

A TTORNEYS Patented Apr, l7, 1923c re a Lia-arid? LEONARD A. YOUNG, E HIGHLAND EARL IiEICElYiQ-i-l l.

Application filed June 21, 1921.

To all whom it may concern:

Be it known that l, LEONARD Yours, citizen of the United States, residing at Highland Park, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Spring- Seat Constructions, of which the following is a specification.

ln the use of spring seat constructions wherein upright body springs, connected in various ways, support upholstery, it iound that if springs of difi'erent periods of vibra tion are employed it prevents the rebound which occurs where the springs are all of the same elasticity. It is frequently desirable to obtain the result of compounding the springs by placing springs one above the other, the upper ones usually being more pliable than the lower. Because of their helical form, it is difficult to secure the base of one spring to the top of the spring on which it rests and so it is quite common to interpose a deck or yielding platform between the lower springs and the upper ones, but this impairs the resiliency of the cushion as the load is transmitted from each o1 the upper springs to all the base springs, in a measure, through this intermediate platform.

This invention relates to spring seat constructions wherein the body springs are com pounded or built up so as to provide the desired elasticity of the freedom from rebound and at the same time preserve the individual action of each body spring, a feature which is not obtainable by the use of the intermediate deck, this result being obtained by the use oi individual deck plates which unite the end coils of a pair of super-- posed springs and also form a seat for the upper one of each pair.

The invention consists in the matters hereinafter set forth and more particularly ,ointed out in the appended claims.

In the drawing F I is a fragmentary plan view of a spring seat construction embodying the features of my invention, the upholstery being omitted for convenience in illustration.

H is an enlarged detail vertical section on a line corresponding to line 2-2 of Figs. 1 Ill, looking in the direction of the arrows showing details of my improved spring connector.

Fig. Ill is a detail view showing details of my improved cross stay.

In the drawing similar numerals of ref- Serial No. 479,382.

erence refer to similar parts throughout all the views.

Referring to the drawing, 1 provide a suitable supporting base, which, in the structure illustrated, comprises a bottom rim 1 and cross strips 2. However, as the structure of the base forms no part of this invention, the details thereof are not further illustrated or described. 1 preferably provide a top border rim 3.

The structure illustrated is designed for spring seats such as automobile cushion seats and it'will be understood that in practice the spring construction is suitably upholstored.

I provide a set or bottom springs t which are suitably supported on the base and a set of top springs 5, the top springs being more resilient that the bottom springs, thus providing a soft upper deck for the cushion and a still-er bottom deck to resist the heavier strains or loads. ihese springs aredispos in superimposed relation and in axial alinement as shown in Fig. Ill.

The springs of the upper and lower sets are connected by the connectors 6 which have oppositely facing channels formed therein with a downwardly facing channel 7 engaging the upper coils 8 of the lower springs. while the upwardly cing channels 9 are clamped upon the lower coils 10 of the upperset of springs. These connectors in the embodiment illustrated are formed of sheet metal plates, the channels being concentric and facing oppositely as illustrated.

In the structure illustrated I provide one or more cross bases 11 which have laterally turned ends 12 engaged in the channels 13 01 the ti-shaped tie members 14 which are secured by the rivets 15 to the connectors of adjacent springs. This brace serves to assist in supporting the structure in upright position and supports the springs against tilting movement.

As a result of this construction, a spring seat is obtained which has the desired pliancy r softness in the upper portion, due to the upper body springs which may be very light, the resistance to severe shock a'F'orded by the lower stationary body springs, and the resistance to lateral displacement provided for by the cross stays. Another feature is the freedom or" the action or each body spring which may be compressed independently of any adjacent spring. An other feature is the use of the spring supports between the upper and lower sections of each body spring, which, because they are perforated, prevent the end coils of the springs from Working loose and turning into each other, a common fault where clips alone are used to hold the end coils of springs of this type.

Obviously changes in the detail of construction may be made Without departing from the spirit of the invention and 1 do not care totlimit myself to any particular form or arrangement of parts.

I claim as my invention:

1. In a spring structure a compound spring consisting of superimposed springs, connectors therefor comprising sheet metal plates having concentric oppositely facing channels therein, the downwardly facing channel being engaged and clamped upon the top coils of the lower springs and the upwardly facing channels engaging with and clamped upon the bottom coils of the upper springs, tie members of U-cross section secured to the connectors of ad acent springs, and braces disposed with their ends engaging the channels of said tie members.

2. In spring structure, a compound spring consisting of superimposed springs, connectors therefor comprising sheet metal plates having concentric oppositely facing channels therein, the downwardly facing channel beingv engaged and clamped upon the top coils of the lower springs and the upwardly facing channels engaging With and clamped upon the bottom coils of the upper springs.

3. A spring seat structure comprising superimposed. springs, connecting members therefor for ied of sheet metal and having oppositely facing channels, the end coils of the springs being engaged in said channels.

In testimony whereof I afiix my signature.

LEONARD A. YOUNG. 

